3/8 inch x 1/2 inch Reducing Insert Coupling Crimp x Crimp

3/8" x 1/2" Reducing Insert Coupling – Crimp x Crimp for PEX Transitions

The 3/8" x 1/2" Reducing Insert Coupling provides a dependable solution for transitioning between PEX tubing sizes in potable water or hydronic distribution systems. Designed for crimp or clamp installation methods, this fitting supports secure, permanent connections with minimal pressure drop.

Engineered for Performance

Constructed from lead-free brass, this insert-style coupling offers high corrosion resistance and mechanical strength across a range of operating conditions. It is ideal for reducing line sizes while maintaining flow continuity and system integrity.

• ✅ Material: Lead-free dezincification-resistant brass suitable for potable applications
• ✅ Connection: ASTM F1807 compliant crimp x crimp connection for use with PEX tubing
• ✅ Operating Range: Rated for use in systems up to 200°F and 200 psi (when installed per standards)
• ✅ Dimensional Accuracy: Precision-machined barbs ensure a tight mechanical seal with the tubing and clamp

Installation Guidelines

This coupling is compatible with copper crimp rings or stainless steel clamps and can be installed using standard ASTM-compliant PEX tools. Always verify insertion depth and ring placement to ensure code-compliant sealing. No additional sealant or tape is required with properly installed PEX fittings.

Where It’s Applied

Commonly installed in residential and light commercial plumbing systems for water distribution. This reducer coupling is used when transitioning between fixture branches and supply lines of different diameters, particularly in retrofit work or layout modifications.

Standards & Compliance

• NSF/ANSI 61 and 372 certified for use in potable water systems
• Meets ASTM F1807 specifications for brass insert fittings
• Complies with national lead-free legislation (≤0.25% lead content)

Note on System Compatibility

Use only with approved SDR9 PEX tubing. This fitting is not intended for use with CPVC, copper, or other rigid pipe types. Ensure all components in the system meet local code requirements for safe and effective operation.

The 3/8" x 1/2" Reducing Insert Coupling is a proven solution for achieving reliable transitions in pressurized PEX systems. Its compact form and code-compliant construction make it a practical choice for contractors demanding consistent results on the job site.